Lock and latch.



J. MONTGOMERY. LOOK AND LATCH.

APPLICATION FILED APR. 16, 1913.

1,086,837. Patented Feb. 10, 1914.

2 SHEETS-BHIZET 1.

WITnEsaEs \HVEHTOR WN-M 7 j BY W Z HTTDRHEY J. MONTGOMERY.

LOCK AND LATCH.

APPLICATION FILED APR. 16, 1913. 1,086,837, Patented Feb. 10, 1914.

2 SHEEN-SHEET 2.

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I .9 A c Y c v I (M h K mvamoiz W WVZM applied to JOHN MONTGOMERY, OF TORONTO, ONTARIO, CANADA.

LOCK AND LATCH.

Specification of Letters Patent.

Patented Feb. 10, 1914.

Application filed April 16, 1913. Serial No. 761,556.

To all whom it may concern:

Be it known that I, JOHN MONTGOMERY, a subject of the King of Great Britain, residing at Toronto, county of York, and Province of Ontario, Canada, have invented a certain new and useful Improvement in Locks and Latches, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to looks and latches and especially to combined locks'and latches in which the keyhole and part of the locking mechanism is located in the door-knob.

My present invention is an improvement over the knob-lock shown in my Patent No. 823,348 in the employment of a cam sleeve as a locking pin carrier. The nature of this improvement will more fully appear in a detail description of this member and its adjacent members.

A further feature of this invention is the structure of the knob and thimble which connects the knob with the spindle escutcheon to facilitate the assembly of the lock.

In the drawings Figure 1 is a longitudinal section of the combined knob-lock and latch, some of the parts shown in elevation and partly broken away to show the in terior construction. Fig. 2 is a section on a line 22 of Fig. 1. Fig. 3 is a section on the line 33 of Fig. 1. Fig. 4' is a section of the outside end of the tube, showing the lock-cylinder and a part of the locking spindle. The key is shown inplaceto lift the locking dog. Fig. 5 is an elevation of the lock-cylinder. Fig. 6 is a section on the line 66 of Fig. 4'. Fig. 7 is a section on the line 77 of Fig. 4. Fig. 8 shows the look a left-hand door. Fig. 9 is the same view with bolt reversed. Fig. 10 is a perspective view of the bolt frame. Fig. 11 is a view partly in section of the tube, the locking spindle, the bolt frame and the device for locking the bolt frame and tube. Fig. 12 is a perspective of a portion of the tube that incases the locking spindle.

B, B represent the escutcheons. Inside of the escutcheons are rotating sleeves b, I), having flanged heads 72*, b These sleeves are immovabl held by spinning within the thimbles C, 8 whereby the thimbles and the sleeves can rotate in a longitudinally fixed relation to the escutcheons B, B. Knobs K, K are attached to the sleeves C, C by having external threads on the knob screwing into the internal threads 0, 0 on the thimbles C, C. By turning the thimbles C, C upon their bearings (the sleeves b, I) being fast to the thimbles C, C and rotating in the escutcheon plates B, B) the knobs K, K are drawn into place. The knob K slides upon its key connection with the tube T (Fig. 1), and the knob K slides upon its pin and key-Way connection with the tube T (see L and K Fig. 1). The escutcheons B, B are fastened to the doors in the usual way by screws, which in this instance I have not shown attached or screwed into the woodworkof the door, but into metal plugs inserted in holes in the door so that a metallic connection is formed between the sets of screws and escutcheons and thus avoiding all of the defects incident to running the screws into the wood of the door in the usual manner. The knobs K, K

are hollow. An opening D, D is in the .outer surfaces of the knobs into which is inserted a tube T running entirely through the lock and the knobs from end to end. gPortions of this tube are shown in Figs.

4 and 11 partially sectioned.

Referring now to the locking bolt and yoke shown partially sectioned in Fig. 2, the face plate E has an inwardly projecting conical extension E which is hollow and :bored to receive the bolt F having a smaller rearward extension F and fitting a guideihole E in the rearward extension E of the face plate E, and surrounded by a compressed spiral spring S, one end of the spring abutting against the bolt-head F and the other end resting against the interior or base of the rear extension E near E". This spring tends to keep the bolt in the position shown in the drawing, but by its compression permits the bolt to recede aproper distance to escape the door-jamb and locking plate thereon (not shown). The rear end of the bolt at F is connected with a yoke Y by a set screw or pin P passing through the yoke Y and the rear end F of the bolt. The rear portion of the bolt F being cylindrical and being in a cylindrical hole at E it can be rotated so as to permit the bolt to be used as a right or left-hand bolt by simply taking the lock apart and turning the yoke over in the manner hereinafter described in connection with the operating mechanism. The

yoke or bolt frame is shown'in detail in Fig. 10 and is peculiarly shaped. It consists of an oblong framework Y having a bayonet catch Y cut in one side and a bayonet catch Y cut in the other side. It also has at its rear portion a notch Y for a purpose hereinafter described.

The tub T carries a locking spindle L' adapted to rotate therein to a degree permissible by the attachments hereinafter described. One end of this locking spindle at L is notched by a transverse groove L as shown especially in Fig. 4. This groove is intended to receive the end of a flat key M, as shown at M, and the turning of the key will turn the bolt L by reason of its engagemcnt in this notghin a similar manner as a screw-driver turns a screw.

I have shown in Figs. 4, 5, 6 and 7 details of a lock similar to a Yale lock, whereby a flat key of the proper form can be inserted and by moving spring controlled plugs to a proper distance it will make their ends coincide with the interior of the tube T, and thus permit the key M to turn. It is plain that the appropriate key must be furnished to lit the lock in question, and it is understood that each lock would differ from another in that respect, so that keys could not be used indiscriminately. When the key can turn it will turn the locking spindle L in the manner and for the purpose hereinafter described. It is also plain that any so-callcd Yale lock or a lock of similar construction may be employed, and therefore, as the lock itself in its details is not a part of my invention, I do not deem it necessary to fully describe it further but only to indicate it.

The locking spindle L carries a cam head H which has a triangular point or cam- 11 (see Figs. 1 and 11). This head may be integral with or fastened on the locking spindle L by a set screw, or in any other convenient manner. An extension of the locking spindle L with its intermediate por-' tion J smaller in diameter is shown also in Figs. 1 and 11. This locking spindle carries slidably thereon a sleeve cam H, which has two rentering angles N in opposite sides thereof adapted to fit the cam points h. Only one of these is shown in Fig. 11. The cam H is prevented from turning by means of a screw or plug R which extends outwardly through a longitudinal slot t in the tube T. This construction permits the looking spindle L to turn, but the sleeve cam H is held stationary. As shown in Fig. 1 and partially in Fig. 11, the slidable cam H is controlled by a spiral spring which forces it toward the opposite end of the locking 's indle L and .keeps the exterior angle h of t e cam head H in contact with the interior angle N of the cam sleeve II, as shown in Fig. 1. The turnin of the locking s indle L carrying immovab y thereon a hea H, the

cam sleeve H not being rotatable, compels a longitudinal movement of the cam sleeve H against the spiral spring S and thus forces itlongitudinally to an extent equalto the depth of the angle N and thus moves the screw or plug R to a corresponding extent longitudinally in the slot t in the tube T.

Referringto the yoke Y and the notch Y in the end of the yoke as shown in Fig. 10, and also in Fig. 1, it will be seen that, when in position as shown in Fig. 1, the pin or screw R engages in this notch Y and therefore prevents the turning of the tube '1 through which the pin protrudes and correspondingly prevents the reciprocation of the bolt F by turning the knob K connected thereto. Inasmuch as the tube T cannot turn until the pin R, carried by the cam sleeve H", is withdrawn from the notch Y provision must be had for compelling this longitudinal movement of the cam sleeve by the notch opposite the lock or the knob K. I attain this by compelling the locking spindle L carrying the cam head H to turn when the knob K turns by means'of a mechanism which I will proceed to describe. Attached to the bolt L is an enlargement L shown partially in section in Fig. 1, the end of which fits within 'the tube T and forms the abutment of the spring. This enlargement L carries a pin L projecting therefrom through the transverse aperture in the tube T and therefrom slightly into a horizontal groove K formed in the inner wall of the knob. The transverse slot L permits the rotation to a certain extent of the locking spindle L and the cam head H. The cam sleeve H being held from turning by the pin R being in a longitudinal slot in the sleeve T the effect of the rotation of the camhead His to force the cam sleeve H longitudinally on the locking spindle L and thus throw the pin it out of engagement with the notch Y and permit the knob K to rotate the entire tube T and thus actuate the bolt F by means of the yoke Y. Upon the tube T is attached the wing-piece T shown in the cross-section in Fig. 2. This wing-piece T engages in the bayonet notches Y and Y and the rotation therefore of the tube T in either direction would'compel the recession of the yoke Y and its connected bolt F against the tension of the 'spring S.

The locking spindle L is turned by the key M when it is desired to retract the bolt by turnin the knob K. The independent rotation 0 the locking spindle releases the pin R from the notch Y and the turning of the knob K rotates the tube T and retracts the bolt frame.

Having thus described my invention what I desire to claim is:

1.- In a door-lock the combination of a. frame carrying a bolt for locking the door, a transverse tube, a locking spindle contained therein, means on the tube for reciprocating the frame, a fixed cam member upon said locking spindle, a companion cam member slidable thereon and engaging said fixed cam member, said cam member being elastically forced toward said fixed cam. member, means for so forcing it, said companion cam member carrying a pin extending through the walls of said tube in a longitudinal slot, a notch in the bolt frame into which said pin is adapted to normally engage, said look ing spindle carrying another pin extending through a transverse aperture in the walls of said tube, a knob upon one end of said tube having a groove in its interior surface to engage said last named pin whereby said locking spindle can be turned inside of said tube and operate said cam members to Withdraw the slidable cam member from the fixed one and disengage the first named pin from the bolt frame and thereby permit the tube to actuate the bolt carrier substantially as described.

2. In a door-lock the combination of a bolt frame carrying a bolt for locking the door, a transverse tube, means on the tube for engaging the bolt and a locking spindle interionof the transverse tube, a fixed cam member upon said locking spindle, a companion cam member slidable thereon and engaging said fixed member, said cam member being elastically forced toward said fixed cam member, means for so forcing it, a knob attached to said tube, a look inside of said knob adapted to receive the key which is permitted to extend therethrough, means for engaging said key with said locking spindle whereby said key is adapted to rotate said locking spindle and thereby actuate said cam fixed thereon to longitudinally move its companion cam and thus remove the pin from the notch in the bolt carrier substantially as described.

3. In a lock the combination of a transverse tube or spindle member, a knob having a sliding key connection with the tube or spindle member and screw-threaded upon its neck portion, and a thimble rotatable with respect to the tube or spindle member but fixed against longitudinal movement in respect thereto, the said thimble being screwthreaded to engage with the screw threads of the neck portion of the knob, whereby' rotation of the thimble draws the knob into place with respect to the tube or spindle member, substantially as described.

at. In a lock the combination of an escutcheon, a sleeve passing through the escutcheon and fixed against longitudinal movement, the said sleeve being spun to liars out at its outside end, a thimble held in rotatable relation with respect to the escutcheonby the/spinning of the said flared end of the sleeve into a recess of the thimble, tube or spindle member passing through the sleeve, a knob having a sliding key connection with the tube or spindle member and screwthreaded upon its neck portion, the said thimhle being screw-threaded to engage with the screw threads of the neck portion of the knob, whereby rotation of the thimble draws the knob into place with respect to the tube or spindle member, substantially as de scribed.

In a knob-lock the combination of a bolt frame provided. with a notch, a tube adapted to reciprocate the bolt frame when turned and provided with a longitudinal smt, said tube lying crosswise of said bolt frame, a locking spindle through said tube, a knob fastened to said tube, a second knob having a lost motion connection with the tube and fastened to the locking spindle, a pin supported on the locking spindle and protruding throu h the longitudinal slot of the tube, means or normally keeping said pin in engagement with the notch of the bolt frame, locking mechanism for ordinaril preventing access to the locking spin le at the end adjacent to the first knob, a key insertible in said locking mechanism to turn the locking spindle independent of the tube, and means connected with the pin for causing the pin to move longitudinally of the tube when the locking spindle is caused to rotate independent of the tube, substantially as described.

6. In a knob-lock the combination of a bolt frame, a tube crossing said bolt frame and adapted to reciprocate the bolt frame when turned, a locking spindle contained in the tube, a knob fastened to said tube, a second knob connected with the tube by a lost motion connection and fastened to the locking spindle, a member adapted to engage with the bolt frame to prevent reciprocation thereof, locking mechanism for preventing access to the end of the spindle adjacent to the first knob, and means for moving the said member that locks the bolt frame against reciprocation, the said means being operable by a limited rotation of the locking spindle independent of the sleeve, which can be accomplished by a key inserted through the locking mechanism at one end and at the other end of the spindle by simply turning the aforesaid second knob a as described.

In testimony whereof, I sign this specification in the presence of two Witnesses.

JOHN MONTGGMERY.

Witnesses2 7 D. S. Tommi, W'rLLLAM HAaLANn.

through the arc of lost motion, substantially 

